Automatic water drinking system for livestock

The invention discloses an automatic drinking system for livestock, and particularly relates to the field of breeding devices. Comprising a water storage tank and a plurality of water storage basins, supporting columns are arranged at the bottoms of the water storage tank and all the water storage basins, the water storage tank is communicated with a water inlet pipe communicated with a water source, an electromagnetic valve is installed on the water inlet pipe, a filter located in the water storage tank is arranged on the water inlet pipe, a liquid level sensor is arranged in the water storage tank, and the liquid level sensor is electrically connected with the electromagnetic valve. The installation position of the liquid level sensor is higher than the bottom wall in the water storage basin, a water outlet pipe is communicated with the water storage tank, a plurality of water outlet branch pipes are communicated with the water outlet pipe, the number of the water outlet branch pipes is the same as that of